Linear optical properties and second-harmonic generation of (1-x)Pb(Mg_1/3Nb_2/3)O₃–xPbTiO₃ single crystals

Ferroelectric crystals with giant electro-optic property enabling ultracompact Q-switches

“…The presence of naturally occurring ferroelectric domain walls in the crystals drastically limits their optical transparency as a result of light scattering and reflection at domain walls arising from the difference in refractive indices of the adjacent domains with different orientations, rendering high optical loss or even opacity in the visible-to-near-infrared spectrum. In the past few decades, considerable efforts have been made to eliminate the light-scattering domain walls in these ferroelectrics, but with very limited success (13)(14)(15)(16)(17)(18)(19)(20)(21). For example, poling a ferroelectric crystal along its polar direction can achieve a single-domain state without domain walls.…”

Optical Induction and Erasure of Ferroelectric Domains in Tetragonal PMN‐38PT Crystals

“…[2] Recent studies of quadratic nonlinearity of Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) crystals in powder form indicated their potential for nonlinear optics. [3] Because of these excellent properties, the relaxor-based ferroelectric crystals could be of great interest as piezoelectric phononic crystals (PPCs) or acoustic superlattices (ASLs) to confine and manipulate phonons for a wide range of applications, including acoustic filters, noise isolation, and heat managements. [4] Unlike the pure elastic phononic crystal, which usually consists of materials with different elastic moduli and/or mass densities, [5] the domain inversion phononic crystal (DIPC) is a monolithic entity within the single ferroelectric, making it more attractive in applications like surface acoustic wave (SAW) devices.…”

Dense ferroelectric-ferroelastic domain structures in rhombohedral PMN-28PT single crystals

“…[1][2][3][4] Recently, second harmonic generation measurements of crystal powder of tetragonal PMN-PT have revealed its promising nonlinear-optical properties. 5 Since it is impossible to realize the phase matching conditions in PMN-PT, the creation of a precise periodical domain structure for the realization of the quasi-phase matching effect is necessary for effective second harmonic generation. 6 A deeper understanding of the physical fundamentals of domain structure evolution and polarization reversal process in PMN-PT is thereby crucial to create the domain patterns with a controllable geometry.…”